Blood purification ultrafiltration device

Abstract

The utility model relates to the technical field of medical equipment, and discloses a blood purification ultrafiltration device which comprises a communicating pipe, the bottoms of the two ends of the communicating pipe are fixedly connected with the same filter chamber, the filter chamber is communicated with the communicating pipe, the two ends of the filter chamber are each provided with four installation grooves, clamping plates are arranged in the installation grooves, and the clamping plates are connected with the filter chamber in a sliding mode. Square grooves are formed in the clamping plates, inclined grooves are formed in the two ends of each clamping plate, the square grooves communicate with the inclined grooves, extrusion plates are arranged in the square grooves, round rods are arranged at the bottom ends of the extrusion plates, the bottom ends of the extrusion plates are arranged in the inclined grooves, and the extrusion plates are slidably connected with the clamping plates; inserting grooves are formed in the tops of the two ends of the fixing plate, first sealing gaskets are fixedly connected to the positions, at the inserting grooves, of the top of the fixing plate, and inserting plates are arranged in the inserting grooves. According to the utility model, the micro-filtration membrane and the ultra-filtration membrane are convenient to mount and dismount, the difficulty of later maintenance work is effectively reduced, and the efficiency of maintenance work can be improved.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a blood purification ultrafiltration device. Background Technology

[0002] A search revealed a Chinese patent with authorization number CN213852371U, which discloses a blood purification device with multi-layer filtration effect. The device includes an infusion tube and an outlet tube. The outlet end of the infusion tube is connected to the inlet of a micro-electromagnetic pump, and the outlet of the micro-electromagnetic pump is connected to one end of a connecting tube. The other end of the connecting tube is connected to the inlet of a filter chamber, and the outlet of the filter chamber is connected to one end of the outlet tube. A first heating pipe is installed inside the outlet tube parallel to its cross-section, and a second heating pipe is installed inside the outlet tube on one side of the first heating pipe. This invention utilizes the connecting tube to allow a large flow rate of blood to enter from both sealed ends and pass sequentially through a microfiltration membrane and an ultrafiltration membrane. The microfiltration membrane filters suspended solids and bacteria in the blood, while the ultrafiltration membrane filters colloids, microorganisms, and large organic molecules in the blood. The filtered blood enters the outlet tube through the outlet. The large blood filtration flow rate and good effect ensure efficient blood purification.

[0003] The blood purification device with multi-layer filtration effect in the aforementioned patent has the following shortcomings: after a period of use, the microfiltration membrane and ultrafiltration membrane will have a lot of impurities adhering to their surfaces, forming a dirt layer, reducing the effective filtration area, resulting in a decrease in blood flow through the membrane and a reduction in filtration effect. Furthermore, the microfiltration membrane and ultrafiltration membrane in the device of the aforementioned patent are installed and fixed inside a sealed chamber, which is inconvenient for later maintenance and is difficult to install and disassemble. Therefore, it is necessary to design a blood purification ultrafiltration device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a blood purification ultrafiltration device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A blood purification ultrafiltration device includes a connecting pipe, with a filter chamber fixedly connected to the bottom of both ends of the connecting pipe. The filter chamber is connected to the connecting pipe. Four mounting slots are provided at both ends of the filter chamber. Clamping plates are installed in the mounting slots and slidably connected to the filter chambers. Square slots are provided on the clamping plates, and inclined slots are provided at both ends of the clamping plates. The square slots are connected to the inclined slots. A squeezing plate is installed in the square slot. The bottom end of the squeezing plate is a round rod, and the bottom end of the squeezing plate is located within the inclined slot. The squeezing plate is slidably connected to the clamping plates. Two fixing plates are fixedly connected to the bottom inner wall of the filter chamber. Slots are provided at the top of both ends of the fixing plates. A first sealing gasket is fixedly connected to the top of the fixing plate at the slot. Insert plates are provided in the slots. Microfiltration membranes and ultrafiltration membranes are respectively fixedly connected to the tops of the two insert plates located at the same end. A common connecting plate is fixedly connected to the tops of the two squeezing plates located at the same end. Discharge ports are provided at the top of both ends of the filter chamber. A filter chamber is installed at the discharge port by screws. The sealing plate, employing a technique that allows the clamping plate to move during installation, solves the problems of difficult installation and disassembly of microfiltration and ultrafiltration membranes. When the sealing plate is fixed to the filter chamber, it causes the squeezing plate to descend and press against the clamping plate, moving the clamping plate closer to the microfiltration or ultrafiltration membrane. The clamping plate then moves the fourth sealing gasket until it contacts the microfiltration or ultrafiltration membrane. Simultaneously, the insert plates at the bottom of the microfiltration and ultrafiltration membranes are inserted into slots. The compression of the fourth sealing gasket effectively limits and fixes the microfiltration and ultrafiltration membranes, thus completing the installation. For disassembly, the sealing plate is removed, and pulling the connecting plate moves the fourth sealing gasket away from the microfiltration and ultrafiltration membranes, releasing the clamping fixation and allowing the microfiltration and ultrafiltration membranes to be extracted for replacement. This effectively solves the problems of the aforementioned patent's device in the background art, where the microfiltration and ultrafiltration membranes are fixed inside the sealed chamber, making later maintenance inconvenient and installation and disassembly difficult. Therefore, it achieves the technical effect of facilitating the installation and disassembly of microfiltration and ultrafiltration membranes, effectively reducing the difficulty of later maintenance work, and improving the efficiency of maintenance work.

[0007] As a further embodiment of this utility model, a second sealing gasket is fixedly connected to the bottom of the sealing plate. The second sealing gasket is adapted to the discharge port at the top of the filter chamber, and the second sealing gasket seals the gaps at the discharge port, the microfiltration membrane and the ultrafiltration membrane at the top of the filter chamber.

[0008] As a further embodiment of this utility model, a miniature electromagnetic pump is fixedly connected to the top of the connecting pipe, the output end of the miniature electromagnetic pump is connected to the connecting pipe, and the input end of the miniature electromagnetic pump is fixedly connected to an inlet pipe.

[0009] As a further embodiment of this utility model, the two clamps located on the same side are each fixedly connected with a fourth sealing gasket on the side that is close to each other, and the inner wall of the filter chamber is fixedly connected with a third sealing gasket at the position of the mounting groove. The third sealing gasket is set close to the clamps and seals the gap between the clamps and the filter chamber. The fourth sealing gasket seals the gap between the clamps and the microfiltration membrane and the ultrafiltration membrane.

[0010] As a further embodiment of this utility model, a liquid outlet pipe is fixedly connected to the bottom of the filter chamber, and the liquid outlet pipe is connected to the filter chamber.

[0011] As a further embodiment of this utility model, a heating pipe is provided inside the liquid outlet pipe.

[0012] As a further embodiment of this utility model, a first tee connector is provided on one side of the outlet pipe. The two ends of the first tee connector near the outlet pipe are connected to outlet hoses. A horizontal tank is connected to the first tee connector at the end away from the outlet pipe. A heating wire is provided inside the horizontal tank. A miniature booster pump is fixedly connected to the output end of the horizontal tank. A connecting hose is fixedly connected to the output end of the miniature booster pump. A second tee connector is fixedly connected to the end of the connecting hose away from the miniature booster pump. Inlet hoses are fixedly connected to the two ends of the second tee connector away from the connecting hose.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention addresses the problem of moving the clamping plate during the installation of the sealing plate. When installing microfiltration and ultrafiltration membranes, the sealing plate is fixed to the filter chamber. The sealing plate causes the squeezing plate to descend and press against the clamping plate, moving it closer to the microfiltration or ultrafiltration membrane. The clamping plate then moves the fourth sealing gasket until it contacts the membrane. Simultaneously, the insert plates at the bottom of the microfiltration and ultrafiltration membranes are inserted into slots. The compression of the fourth sealing gasket effectively limits and fixes the microfiltration and ultrafiltration membranes, thus installing them. For disassembly, the sealing plate is removed, and pulling the connecting plate moves the fourth sealing gasket away from the membranes, releasing the clamping fixation and allowing the membranes to be removed for replacement. This effectively solves the problem in the prior art where the microfiltration and ultrafiltration membranes are fixed inside the sealed chamber, making maintenance difficult and installation and disassembly challenging. This invention facilitates the installation and disassembly of microfiltration and ultrafiltration membranes, reducing the difficulty of later maintenance and improving maintenance efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a blood purification ultrafiltration device proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the filtration chamber location structure of a blood purification ultrafiltration device proposed in this utility model;

[0017] Figure 3 This is a schematic diagram showing the unfolded cross-sectional structure of the filter chamber of a blood purification ultrafiltration device proposed in this utility model;

[0018] Figure 4 This is a partial structural diagram of a blood purification ultrafiltration device proposed in this utility model;

[0019] Figure 5 This is a partial unfolded structural diagram of a blood purification ultrafiltration device proposed in this utility model;

[0020] Figure 6 This is a schematic diagram showing the unfolded cross-sectional structure of the clamping plate of a blood purification ultrafiltration device proposed in this utility model.

[0021] In the diagram: 1. Connecting pipe; 2. Filter chamber; 3. Mounting groove; 4. Clamping plate; 5. Square groove; 6. Inclined groove; 7. Extrusion plate; 8. Fixing plate; 9. Slot; 10. First sealing gasket; 11. Insert plate; 12. Microfiltration membrane; 13. Ultrafiltration membrane; 14. Connecting plate; 15. Sealing plate; 16. Second sealing gasket; 17. Miniature electromagnetic pump; 18. Inlet pipe; 19. Outlet pipe; 20. Outlet hose; 21. First tee connector; 22. Horizontal tank; 23. Miniature booster pump; 24. Connecting hose; 25. Second tee connector; 26. Inlet hose; 27. Third sealing gasket; 28. Fourth sealing gasket. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and implementing regulations.

[0024] Reference Figure 1 - Figure 6A blood purification ultrafiltration device includes a connecting pipe 1, with a filter chamber 2 fixedly connected to the bottom of both ends of the connecting pipe 1. The filter chamber 2 is connected to the connecting pipe 1. Four mounting slots 3 are provided at both ends of the filter chamber 2. Clamping plates 4 are installed in the mounting slots 3 and are slidably connected to the filter chamber 2. Square slots 5 are provided on the clamping plates 4, and inclined slots 6 are provided at both ends of the clamping plates 4. The square slots 5 and inclined slots 6 are connected. A squeezing plate 7 is installed in the square slot 5. The bottom end of the squeezing plate 7 is a round rod and is located in the inclined slot 6. The squeezing plate 7 slides... The filter chamber 2 is connected to a movable connecting clamp 4. Two fixing plates 8 are fixedly connected to the bottom inner wall of the filter chamber 2. Slots 9 are provided at the top of both ends of each fixing plate 8. A first sealing gasket 10 is fixedly connected to the top of the fixing plate 8 at the position of the slot 9. Insert plates 11 are installed inside the slots 9. Microfiltration membranes 12 and ultrafiltration membranes 13 are fixedly connected to the tops of the two insert plates 11 located at the same end, respectively. The same connecting plate 14 is fixedly connected to the tops of the two extrusion plates 7 located at the same end. Discharge ports are provided at the top of both ends of the filter chamber 2. The filter chamber 2 is connected to the discharge ports by screws... The filter is equipped with a sealing plate 15. Because the installation process utilizes a technique that allows the clamping plate to move, when installing the microfiltration or ultrafiltration membrane, the sealing plate, fixed to the filter chamber, causes the compression plate to descend and press against the clamping plate, moving the clamping plate closer to the microfiltration or ultrafiltration membrane. The clamping plate then moves the fourth sealing gasket until it contacts the microfiltration or ultrafiltration membrane. Simultaneously, the insert plates at the bottom of the microfiltration and ultrafiltration membranes are inserted into their slots. The compression of the fourth sealing gasket effectively limits and fixes the microfiltration and ultrafiltration membranes, thus completing the installation. During disassembly, the sealing plate is removed, and the connecting plate is pulled to move the fourth sealing gasket away from the microfiltration membrane and ultrafiltration membrane, thereby releasing the clamping fixation and allowing the microfiltration membrane and ultrafiltration membrane to be extracted for replacement. This effectively solves the problem in the aforementioned patent mentioned in the background art that the microfiltration membrane and ultrafiltration membrane in the device are installed and fixed inside the sealed chamber, which is inconvenient for later maintenance and has a high degree of difficulty in installation and disassembly. Thus, it achieves the technical effect of facilitating the installation and disassembly of the microfiltration membrane and ultrafiltration membrane, effectively reducing the difficulty of later maintenance work, and improving the efficiency of maintenance work.

[0025] In this embodiment, a second sealing gasket 16 is fixedly connected to the bottom of the sealing plate 15. The second sealing gasket 16 is adapted to the discharge port at the top of the filter chamber 2. The second sealing gasket 16 seals the gaps at the discharge port, microfiltration membrane 12 and ultrafiltration membrane 13 at the top of the filter chamber 2.

[0026] In this embodiment, a micro electromagnetic pump 17 is fixedly connected to the top of the connecting pipe 1, the output end of the micro electromagnetic pump 17 is connected to the connecting pipe 1, and the input end of the micro electromagnetic pump 17 is fixedly connected to the inlet pipe 18.

[0027] In this embodiment, two clamping plates 4 located on the same side are fixedly connected with a fourth sealing gasket 28 on the side that is close to each other. A third sealing gasket 27 is fixedly connected to the inner wall of the filter chamber 2 at the position of the mounting groove 3. The third sealing gasket 27 is set close to the clamping plate 4 and seals the gap between the clamping plate 4 and the filter chamber. The fourth sealing gasket 28 seals the gap between the clamping plate and the microfiltration membrane and the ultrafiltration membrane.

[0028] In this embodiment, a liquid outlet pipe 19 is fixedly connected to the bottom of the filter chamber 2, and the liquid outlet pipe 19 is connected to the filter chamber 2.

[0029] In this embodiment, a heating pipe is provided inside the liquid outlet pipe 19.

[0030] In this embodiment, a first three-way connector 21 is provided on one side of the outlet pipe 19. The two ends of the first three-way connector 21 near the outlet pipe 19 are connected to outlet hoses 20. The first three-way connector 21 is connected to a horizontal tank 22 at the end away from the outlet pipe 19. A heating wire is provided inside the horizontal tank 22. A micro booster pump 23 is fixedly connected to the output end of the horizontal tank 22. A connecting hose 24 is fixedly connected to the output end of the micro booster pump 23. A second three-way connector 25 is fixedly connected to the end of the connecting hose 24 away from the micro booster pump 23. An inlet hose 26 is fixedly connected to the two ends of the second three-way connector 25 away from the connecting hose 24.

[0031] Working Principle: When using this device with an external power supply, connect the blood storage tank to the inlet pipe 18, start the micro electromagnetic pump 17, which draws blood through the inlet pipe 18 into the connecting pipe 1, and then injects it into the filter chamber 2. The blood is filtered sequentially through the microfiltration membrane 12 and the ultrafiltration membrane 13. The microfiltration membrane 12 filters suspended solids and bacteria from the blood, while the ultrafiltration membrane 13 filters colloids, microorganisms, and large organic molecules from the blood. The filtered blood enters the outlet pipe 19 and passes through the heating pipe within the outlet pipe 19, which heats the heating wire to heat the liquid in the horizontal tank 22. The micro booster pump 23 is then started to pump the heated liquid into the connecting hose 24, and the liquid then passes through the second three-way connector. 25 enters the inlet hose 26 and finally enters the heating pipe in the outlet pipe 19 to heat the blood. After cooling, the liquid returns from the heating pipe through the two outlet hoses 20 back into the horizontal tank 22 for reheating, completing the blood heating process. The warm liquid heats the blood evenly and stably. After a period of use, the surfaces of the microfiltration membrane 12 and ultrafiltration membrane 13 will have more impurities attached, affecting the filtration effect, and need to be replaced. At this time, the screws on the sealing plate 15 can be removed, the sealing plate 15 and the second sealing gasket 16 can be removed, and then the connecting plate 14 can be pulled to raise the connecting plate 14. The connecting plate 14 will drive the squeezing plate 7 to rise, and the squeezing plate 7 will move in the inclined groove 6, squeezing the blood. The clamping plate 4 moves away from the microfiltration membrane 12 or ultrafiltration membrane 13, which in turn moves the fourth sealing gasket 28, preventing it from contacting the microfiltration membrane 12 or ultrafiltration membrane 13. This allows the microfiltration membrane 12 and ultrafiltration membrane 13 to be removed for replacement or cleaning. During installation, the microfiltration membrane 12 and ultrafiltration membrane 13 are inserted into the filter chamber 2, and the insert plates 11 at the bottom of the microfiltration membrane 12 and ultrafiltration membrane 13 are inserted into the slot 9, ensuring they are in close contact with the first sealing gasket 10. Then, the connecting plate 14 is pressed, causing the squeezing plate 7 to descend. The squeezing plate 7 then presses the clamping plate 4, bringing the two clamping plates 4 on the same side closer together, thus allowing the fourth sealing gasket 28 to be removed. Move the microfiltration membrane 12 or ultrafiltration membrane 13 closer to it until they come into contact, and clamp and fix the microfiltration membrane 12 or ultrafiltration membrane 13. Then install the sealing plate 15, so that the second sealing gasket 16 is placed in the outlet at the top of the filter chamber 2 for sealing. Use screws to fix the sealing plate 15 to the filter chamber 2. At the same time, the sealing plate 15 can restrict the connecting plate 14. After the sealing plate 15 is installed, the connecting plate 14 can no longer move, so the clamping plate 4 cannot move, thus preventing the microfiltration membrane 12 and ultrafiltration membrane 13 from shifting during filtration. The installation of the microfiltration membrane 12 and ultrafiltration membrane 13 is completed. The first sealing gasket 10, the second sealing gasket 16, the third sealing gasket 27, and the fourth sealing gasket 28 also play a good sealing role.

[0032] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A blood purification ultrafiltration device, comprising a connecting tube (1), characterized in that, Both ends of the connecting pipe (1) are fixedly connected to the same filter chamber (2). The filter chamber (2) is connected to the connecting pipe (1). Both ends of the filter chamber (2) are provided with four mounting slots (3). A clamping plate (4) is provided in the mounting slot (3). The clamping plate (4) is slidably connected to the filter chamber (2). A square slot (5) is provided on the clamping plate (4). Both ends of the clamping plate (4) are provided with inclined slots (6). The square slot (5) is connected to the inclined slot (6). A pressing plate (7) is provided in the square slot (5). The bottom end of the pressing plate (7) is a round rod. The bottom end of the pressing plate (7) is set in the inclined slot (6). The pressing plate (7) is slidably connected to the clamping plate (2). 4) Two fixing plates (8) are fixedly connected to the bottom inner wall of the filter chamber (2). Slots (9) are opened at the top of both ends of the fixing plates (8). A first sealing gasket (10) is fixedly connected to the top of the fixing plates (8) at the position of the slots (9). Insert plates (11) are provided in the slots (9). Microfiltration membrane (12) and ultrafiltration membrane (13) are fixedly connected to the top of the two insert plates (11) at the same end, respectively. The same connecting plate (14) is fixedly connected to the top of the two extrusion plates (7) at the same end. A discharge port is opened at the top of both ends of the filter chamber (2). A sealing plate (15) is installed at the discharge port of the filter chamber (2) by screws.

2. The blood purification ultrafiltration device according to claim 1, characterized in that, The bottom of the sealing plate (15) is fixedly connected to a second sealing gasket (16), which is adapted to the discharge port at the top of the filter chamber (2).

3. The blood purification ultrafiltration device according to claim 1, characterized in that, A micro electromagnetic pump (17) is fixedly connected to the top of the connecting pipe (1). The output end of the micro electromagnetic pump (17) is connected to the connecting pipe (1), and the input end of the micro electromagnetic pump (17) is fixedly connected to the inlet pipe (18).

4. The blood purification ultrafiltration device according to claim 1, characterized in that, The two clamps (4) located on the same side are fixedly connected with a fourth sealing gasket (28) on the side that is close to each other. The inner wall of the filter chamber (2) is fixedly connected with a third sealing gasket (27) at the position of the mounting groove (3). The third sealing gasket (27) is set close to the clamp (4).

5. The blood purification ultrafiltration device according to claim 4, characterized in that, The bottom of the filter chamber (2) is fixedly connected to a liquid outlet pipe (19), which is connected to the filter chamber (2).

6. The blood purification ultrafiltration device according to claim 5, characterized in that, The outlet pipe (19) is equipped with a heating pipe.

7. The blood purification ultrafiltration device according to claim 6, characterized in that, A first three-way connector (21) is provided on one side of the outlet pipe (19). The two ends of the first three-way connector (21) near the outlet pipe (19) are connected to outlet hoses (20). The first three-way connector (21) is connected to a horizontal tank (22) at the end away from the outlet pipe (19). A heating wire is provided inside the horizontal tank (22). A micro booster pump (23) is fixedly connected to the output end of the horizontal tank (22). A connecting hose (24) is fixedly connected to the output end of the micro booster pump (23). A second three-way connector (25) is fixedly connected to the end of the connecting hose (24) away from the micro booster pump (23). An inlet hose (26) is fixedly connected to the two ends of the second three-way connector (25) away from the connecting hose (24).

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